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"which gcc" doesn't work but "which gcc.exe" does


hi,

i've just installed cygwin on a new windows 8.1 pro laptop and
am having the wierd problem that i can't invoke gcc without
actually typing "gcc.exe". e.g.

  $ gcc --version
  -bash: gcc: command not found
  $ gcc.exe --version
  gcc (GCC) 4.7.3
  Copyright (C) 2012 Free Software Foundation, Inc.
  ...

similarly:

  $ which gcc
  which: no gcc in (...)
  $ which gcc.exe
  /usr/bin/gcc.exe

this isn't happening for any other executable i've tried
(e.g. ls, less, bash, make, ld) so it seems quite odd.

cygcheck -sr shows some registry entries for a now-deleted 64bit cygwin
installation but i don't know if that's important. the full output is below.

thanks for any help,
raf

p.s. another odd thing is that running "cygcheck -sr >cygcheck-sr.out 2>&1"
in Cygwin Terminal as the Administrator user produced a file with "\r\n"
line endings (i.e. "ASCII text, with CRLF line terminators") but running it
in Cygwin Terminal as a normal user produced a file with "\r\r\n" line
endings (i.e. "ASCII text, with CRLF, LF line terminators"). why the
difference?

-----------------------------------------------------------------------------
output of "cygcheck -sr >cygcheck-sr.out 2>&1" as Administrator

Cygwin Configuration Diagnostics
Current System Time: Wed Oct 30 02:51:07 2013

Windows 8 Professional N Ver 6.2 Build 9200 

Running under WOW64 on AMD64

Path:	C:\cygwin\usr\local\bin
	C:\cygwin\bin
	C:\Program Files (x86)\Intel\iCLS Client
	C:\Program Files\Intel\iCLS Client
	C:\WINDOWS\system32
	C:\WINDOWS
	C:\WINDOWS\System32\Wbem
	C:\WINDOWS\System32\WindowsPowerShell\v1.0
	C:\Program Files\Intel\Intel(R) Management Engine Components\DAL
	C:\Program Files\Intel\Intel(R) Management Engine Components\IPT
	C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL
	C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT
	C:\Program Files (x86)\Windows Live\Shared
	C:\Program Files\Intel\WiFi\bin
	C:\Program Files\Common Files\Intel\WirelessCommon
	C:\Python27
	C:\Python27\Scripts
	C:\Program Files (x86)\PostgreSQL\9.3\lib
	C:\Program Files (x86)\PostgreSQL\9.3\bin

Output from C:\cygwin\bin\id.exe
UID: 1001(mary)     GID: 513(None)
513(None)           0(root)             544(Administrators) 545(Users)

SysDir: C:\WINDOWS\system32
WinDir: C:\WINDOWS

USER = 'mary'
PWD = '/home/mary'
HOME = '/home/mary'

HKEY_CURRENT_USER\Software\Cygwin
HKEY_CURRENT_USER\Software\Cygwin\Installations
  (default) = '\??\C:\cygwin64'
  c5e39b7a9d22bafb = '\??\C:\cygwin'
HKEY_CURRENT_USER\Software\Cygwin\Program Options
HKEY_CURRENT_USER\Software\Cygwin\setup
HKEY_LOCAL_MACHINE\SOFTWARE\Cygwin
HKEY_LOCAL_MACHINE\SOFTWARE\Cygwin\Installations
  (default) = '\??\C:\cygwin'
HKEY_LOCAL_MACHINE\SOFTWARE\Cygwin\Program Options
HKEY_LOCAL_MACHINE\SOFTWARE\Cygwin\setup
  (default) = 'C:\cygwin'

obcaseinsensitive set to 1

Cygwin installations found in the registry:
  System: Key: c5e39b7a9d22bafb Path: C:\cygwin
  User:   Key: e022582115c10879 Path: C:\cygwin64 (ORPHANED)
  User:   Key: c5e39b7a9d22bafb Path: C:\cygwin

c:  hd  NTFS    939939Mb   5% CP CS UN PA FC     OS
d:  cd             N/A    N/A                    

C:\cygwin        /          system  binary,auto
C:\cygwin\bin    /usr/bin   system  binary,auto
C:\cygwin\lib    /usr/lib   system  binary,auto
cygdrive prefix  /cygdrive  user    binary,posix=0,auto

Found: C:\cygwin\bin\awk
 -> C:\cygwin\bin\gawk.exe
Found: C:\cygwin\bin\bash.exe
Found: C:\cygwin\bin\cat.exe
Found: C:\cygwin\bin\cp.exe
Found: C:\cygwin\bin\cpp.exe
Not Found: crontab
Found: C:\cygwin\bin\find.exe
Found: C:\WINDOWS\system32\find.exe
Found: C:\cygwin\bin\gcc.exe
Found: C:\cygwin\bin\gcc
Not Found: gdb
Found: C:\cygwin\bin\grep.exe
Found: C:\cygwin\bin\kill.exe
Found: C:\cygwin\bin\ld.exe
Found: C:\cygwin\bin\ls.exe
Found: C:\cygwin\bin\make.exe
Found: C:\cygwin\bin\mv.exe
Not Found: patch
Found: C:\cygwin\bin\perl.exe
Found: C:\cygwin\bin\rm.exe
Found: C:\cygwin\bin\sed.exe
Found: C:\cygwin\bin\ssh.exe
Found: C:\cygwin\bin\sh.exe
Found: C:\cygwin\bin\tar.exe
Found: C:\cygwin\bin\test.exe
Found: C:\cygwin\bin\vi.exe
Found: C:\cygwin\bin\vim.exe

  449k 2013/01/01 C:\cygwin\bin\cygasn1-8.dll
   14k 2012/05/04 C:\cygwin\bin\cygattr-1.dll
   62k 2011/05/21 C:\cygwin\bin\cygbz2-1.dll
  115k 2013/04/11 C:\cygwin\bin\cygcloog-0.dll
   10k 2013/03/11 C:\cygwin\bin\cygcom_err-2.dll
    7k 2012/05/07 C:\cygwin\bin\cygcrypt-0.dll
 1518k 2013/02/12 C:\cygwin\bin\cygcrypto-1.0.0.dll
  929k 2011/11/10 C:\cygwin\bin\cygdb-4.5.dll
   93k 2011/11/10 C:\cygwin\bin\cygdb_cxx-4.5.dll
  159k 2013/10/20 C:\cygwin\bin\cygedit-0.dll
  153k 2013/07/31 C:\cygwin\bin\cygexpat-1.dll
   43k 2010/01/02 C:\cygwin\bin\cygform-10.dll
   47k 2010/01/02 C:\cygwin\bin\cygformw-10.dll
  103k 2013/06/16 C:\cygwin\bin\cyggcc_s-1.dll
   19k 2009/02/26 C:\cygwin\bin\cyggdbm-4.dll
    8k 2009/02/26 C:\cygwin\bin\cyggdbm_compat-4.dll
  452k 2013/10/18 C:\cygwin\bin\cyggmp-10.dll
  317k 2011/07/31 C:\cygwin\bin\cyggmp-3.dll
   21k 2013/10/18 C:\cygwin\bin\cyggmpxx-4.dll
   49k 2013/06/16 C:\cygwin\bin\cyggomp-1.dll
  180k 2013/01/01 C:\cygwin\bin\cyggssapi-3.dll
   11k 2013/01/01 C:\cygwin\bin\cygheimbase-1.dll
   20k 2013/01/01 C:\cygwin\bin\cygheimntlm-0.dll
   25k 2012/05/04 C:\cygwin\bin\cyghistory7.dll
  211k 2013/01/01 C:\cygwin\bin\cyghx509-5.dll
  985k 2011/10/16 C:\cygwin\bin\cygiconv-2.dll
   35k 2011/10/16 C:\cygwin\bin\cygintl-8.dll
   21k 2013/01/01 C:\cygwin\bin\cygkafs-0.dll
  373k 2013/01/01 C:\cygwin\bin\cygkrb5-26.dll
    5k 2013/08/31 C:\cygwin\bin\cyglsa.dll
    6k 2013/08/31 C:\cygwin\bin\cyglsa64.dll

  123k 2011/05/19 C:\cygwin\bin\cyglzma-5.dll
   94k 2012/04/22 C:\cygwin\bin\cygmagic-1.dll
   25k 2010/01/02 C:\cygwin\bin\cygmenu-10.dll
   25k 2010/01/02 C:\cygwin\bin\cygmenuw-10.dll
  213k 2011/07/31 C:\cygwin\bin\cygmp-3.dll
   92k 2013/04/11 C:\cygwin\bin\cygmpc-3.dll
  344k 2013/04/11 C:\cygwin\bin\cygmpfr-4.dll
   63k 2010/01/02 C:\cygwin\bin\cygncurses++-10.dll
   63k 2010/01/02 C:\cygwin\bin\cygncurses++w-10.dll
  195k 2010/01/02 C:\cygwin\bin\cygncurses-10.dll
  244k 2010/01/02 C:\cygwin\bin\cygncursesw-10.dll
   13k 2010/01/02 C:\cygwin\bin\cygpanel-10.dll
   13k 2010/01/02 C:\cygwin\bin\cygpanelw-10.dll
  255k 2012/02/10 C:\cygwin\bin\cygpcre-0.dll
  270k 2013/08/04 C:\cygwin\bin\cygpcre-1.dll
 1628k 2012/07/12 C:\cygwin\bin\cygperl5_14.dll
   22k 2002/06/09 C:\cygwin\bin\cygpopt-0.dll
  897k 2013/04/11 C:\cygwin\bin\cygppl-9.dll
 3092k 2013/04/11 C:\cygwin\bin\cygppl_c-4.dll
   14k 2013/04/11 C:\cygwin\bin\cygpwl-5.dll
  418k 2013/06/16 C:\cygwin\bin\cygquadmath-0.dll
  162k 2012/05/04 C:\cygwin\bin\cygreadline7.dll
   51k 2013/01/01 C:\cygwin\bin\cygroken-18.dll
  588k 2013/06/10 C:\cygwin\bin\cygsqlite3-0.dll
  366k 2013/02/12 C:\cygwin\bin\cygssl-1.0.0.dll
   10k 2013/06/16 C:\cygwin\bin\cygssp-0.dll
  878k 2013/06/16 C:\cygwin\bin\cygstdc++-6.dll
   48k 2010/01/02 C:\cygwin\bin\cygtic-10.dll
   48k 2010/01/02 C:\cygwin\bin\cygticw-10.dll
  157k 2013/01/01 C:\cygwin\bin\cygwind-0.dll
   28k 2010/03/28 C:\cygwin\bin\cygwrap-0.dll
 1235k 2013/04/21 C:\cygwin\bin\cygxml2-2.dll
   73k 2013/05/09 C:\cygwin\bin\cygz.dll
 3042k 2013/08/31 C:\cygwin\bin\cygwin1.dll
    Cygwin DLL version info:
        DLL version: 1.7.25
        DLL epoch: 19
        DLL old termios: 5
        DLL malloc env: 28
        Cygwin conv: 181
        API major: 0
        API minor: 270
        Shared data: 5
        DLL identifier: cygwin1
        Mount registry: 3
        Cygwin registry name: Cygwin
        Program options name: Program Options
        Installations name: Installations
        Cygdrive default prefix: 
        Build date: 
        Shared id: cygwin1S5


Service             : sshd
Display name        : CYGWIN sshd
Current State       : Running
Controls Accepted   : Stop
Command             : /usr/sbin/sshd -D


Cygwin Package Information
Package              Version              Status
_autorebase          000427-1             OK
_update-info-dir     01196-1              OK
alternatives         1.3.30c-10           OK
base-cygwin          3.3-1                OK
base-files           4.1-1                OK
bash                 4.1.10-4             OK
binutils             2.23.51-1            OK
bzip2                1.0.6-2              OK
coreutils            8.15-1               OK
crypt                1.2-1                OK
csih                 0.9.7-1              OK
cygrunsrv            1.40-2               OK
cygutils             1.4.14-1             OK
cygwin               1.7.25-1             OK
dash                 0.5.7-1              OK
delta                2006.08.03-1         OK
diffutils            3.2-1                OK
dos2unix             6.0.3-1              OK
editrights           1.01-2               OK
file                 5.11-1               OK
findutils            4.5.11-1             OK
gawk                 4.1.0-1              OK
gcc                  4.7.3-1              OK
gcc-core             4.7.3-1              OK
gcc-g++              4.7.3-1              OK
grep                 2.14-3               OK
groff                1.21-2               OK
gzip                 1.4-1                OK
ipc-utils            1.0-1                OK
less                 444-1                OK
libasn1_8            1.5.2-4              OK
libattr1             2.4.46-1             OK
libbz2_1             1.0.6-2              OK
libcloog0            0.15.11-1            OK
libcom_err2          1.42.7-1             OK
libdb4.5             4.5.20.2-3           OK
libedit0             20130712-1           OK
libexpat1            2.1.0-3              OK
libgcc1              4.7.3-1              OK
libgdbm4             1.8.3-20             OK
libgmp10             5.1.3-1              OK
libgmp3              4.3.2-1              OK
libgmpxx4            5.1.3-1              OK
libgomp1             4.7.3-1              OK
libgssapi3           1.5.2-4              OK
libheimbase1         1.5.2-4              OK
libheimntlm0         1.5.2-4              OK
libhx509_5           1.5.2-4              OK
libiconv2            1.14-2               OK
libintl8             0.18.1.1-2           OK
libkafs0             1.5.2-4              OK
libkrb5_26           1.5.2-4              OK
liblzma5             5.0.2_20110517-1     OK
libmpc3              1.0.1-2              OK
libmpfr4             3.1.2-1              OK
libncurses10         5.7-18               OK
libncursesw10        5.7-18               OK
libopenssl100        1.0.1e-2             OK
libpcre0             8.21-2               OK
libpcre1             8.33-1               OK
libpopt0             1.6.4-4              OK
libppl9              0.11.2-1             OK
libppl_c4            0.11.2-1             OK
libpwl5              0.11.2-1             OK
libquadmath0         4.7.3-1              OK
libreadline7         6.1.2-3              OK
libroken18           1.5.2-4              OK
libsqlite3_0         3.7.17-3             OK
libssp0              4.7.3-1              OK
libstdc++6           4.7.3-1              OK
libwind0             1.5.2-4              OK
libwrap0             7.6-21               OK
libxml2              2.9.1-1              OK
login                1.10-10              OK
make                 4.0-2                OK
man                  1.6g-2               OK
mintty               1.1.3-1              OK
openssh              6.3p1-1              OK
perl                 5.14.2-3             OK
perl_vendor          5.14.2-3             OK
rebase               4.4.0-1              OK
rsync                3.0.9-1              OK
run                  1.3.0-1              OK
sed                  4.2.2-3              OK
tar                  1.26-1               OK
terminfo             5.7_20091114-14      OK
texinfo              4.13-4               OK
tzcode               2013d-1              OK
vim                  7.3.1314-1           OK
vim-common           7.3.1314-1           OK
vim-minimal          7.3.1314-1           OK
w32api-headers       3.0.0-1              OK
w32api-runtime       3.0.0-1              OK
which                2.20-2               OK
xxd                  7.3.1314-1           OK
xz                   5.0.2_20110517-1     OK
zlib0                1.2.8-1              OK
Use -h to see help about each section

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